DE112010004390T5 - Borehole Motors Stators, Manufacturing Processes, and Wellbore Motors Containing Them - Google Patents
Borehole Motors Stators, Manufacturing Processes, and Wellbore Motors Containing Them Download PDFInfo
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- DE112010004390T5 DE112010004390T5 DE112010004390T DE112010004390T DE112010004390T5 DE 112010004390 T5 DE112010004390 T5 DE 112010004390T5 DE 112010004390 T DE112010004390 T DE 112010004390T DE 112010004390 T DE112010004390 T DE 112010004390T DE 112010004390 T5 DE112010004390 T5 DE 112010004390T5
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- reinforcing material
- stator tube
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
- F04C13/008—Pumps for submersible use, i.e. down-hole pumping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/74—Moulding material on a relatively small portion of the preformed part, e.g. outsert moulding
- B29C70/745—Filling cavities in the preformed part
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/02—Fluid rotary type drives
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
- F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
- F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
- F04C2/1073—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type where one member is stationary while the other member rotates and orbits
- F04C2/1075—Construction of the stationary member
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2101/00—Use of unspecified macromolecular compounds as moulding material
- B29K2101/10—Thermosetting resins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2101/00—Use of unspecified macromolecular compounds as moulding material
- B29K2101/12—Thermoplastic materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2905/00—Use of metals, their alloys or their compounds, as mould material
- B29K2905/08—Transition metals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2230/00—Manufacture
- F04C2230/20—Manufacture essentially without removing material
- F04C2230/21—Manufacture essentially without removing material by casting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/04—Heavy metals
- F05C2201/0469—Other heavy metals
- F05C2201/0475—Copper or alloys thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
- F05C2225/02—Rubber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
- F05C2225/10—Polyimides, e.g. Aurum
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
- F05C2225/12—Polyetheretherketones, e.g. PEEK
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2253/00—Other material characteristics; Treatment of material
- F05C2253/12—Coating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2253/00—Other material characteristics; Treatment of material
- F05C2253/18—Filler
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2253/00—Other material characteristics; Treatment of material
- F05C2253/22—Reinforcements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
- Y10T29/4932—Turbomachine making
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Manufacture Of Motors, Generators (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Die vorliegende Erfindung betrifft ein Verfahren für die Herstellung eines Stators für einen Bohrlochmotor, wobei das Verfahren die Schritte des Vorsehens eines Statorrohrs mit einer inneren Oberfläche und des Aufbringens eines Haftmittels auf die innere Oberfläche des Statorrohrs umfasst. Außerdem wird ein Dorn in dem Statorrohr positioniert, wobei der Dorn eine äußere Geometrie besitzt, die zu einer gewünschten inneren Geometrie für den Stator komplementär ist. Ferner wird in das Statorrohr ein Verstärkungsmaterial eingeleitet, um den Raum zwischen dem Dorn und der inneren Oberfläche des Statorrohrs zu füllen, und anschließend verfestigt, um das Verstärkungsmaterial an der inneren Oberfläche des Statorrohrs anzuhaften. Der Dorn wird dann aus dem Statorrohr und dem Verstärkungsmaterial, die aneinander haften, entnommen, so dass ein Stator hergestellt ist.The present invention relates to a method of manufacturing a stator for a downhole motor, the method comprising the steps of providing a stator tube having an inner surface and applying an adhesive to the inner surface of the stator tube. In addition, a mandrel is positioned in the stator tube, the mandrel having an outer geometry that is complementary to a desired inner geometry for the stator. Further, a reinforcing material is introduced into the stator tube to fill the space between the mandrel and the inner surface of the stator tube, and then solidified to adhere the reinforcing material to the inner surface of the stator tube. The mandrel is then removed from the stator tube and the reinforcing material, which adhere to each other, so that a stator is made.
Description
HINTERGRUND DER ERFINDUNGBACKGROUND OF THE INVENTION
Bohrlochmotoren (gewöhnlich als ”Schlammmotoren” bekannt) sind leistungsstarke Generatoren, die in Bohrvorgängen verwendet werden, um eine Bohrkrone zu drehen, Elektrizität zu erzeugen und dergleichen. Wie durch den Ausdruck ”Schlammmotor” nahe gelegt wird, werden Schlammmotoren oftmals durch Bohrfluid (z. B. ”Schlamm”) angetrieben. Solches Bohrfluid wird außerdem verwendet, um den Bohrstrang zu schmieren und um Schnittabfall abzutransportieren, so dass es oftmals Partikelmaterial wie etwa Bohrlochabfälle, die die nutzbare Lebensdauer von Bohrlochmotoren verringern können, enthält. Daher besteht ein Bedarf an neuen Lösungswegen für eine kostengünstige Herstellung von Bohrlochmotoren und von Bohrlochmotor-Komponenten, die kostengünstig sind und einen schnellen Austausch vor Ort zu erleichtern.Well bore motors (commonly known as "mud motors") are powerful generators used in drilling operations to rotate a drill bit, generate electricity, and the like. As suggested by the term "mud motor", mud motors are often powered by drilling fluid (eg, "mud"). Such drilling fluid is also used to lubricate the drill string and to carry away cut debris so that it often contains particulate matter such as wellbore debris that can reduce the useful life of downhole engines. Therefore, there is a need for new approaches to low cost production of downhole motors and downhole motor components which are cost effective and facilitate rapid field replacement.
ZUSAMMENFASSUNG DER ERFINDUNGSUMMARY OF THE INVENTION
Die vorliegende Erfindung bezieht sich im Allgemeinen auf ein Verfahren für die Herstellung eines Stators für einen Bohrlochmotor, wobei das Verfahren die Schritte des Bereitstellens eines Statorrohrs mit einer inneren Oberfläche, des Aufbringens eines Haftmittels auf die innere Oberfläche des Statorrohrs, des Positionierens eines Dorns in dem Statorrohr, wobei der Dorn eine äußere Geometrie besitzt, die zu einer gewünschten inneren Geometrie für den Stator komplementär ist, und des Einleitens eines Verstärkungsmaterials in das Statorrohr, um den Raum zwischen dem Dorn und der inneren Oberfläche des Statorrohrs zu füllen, umfasst. Außerdem wird das Verstärkungsmaterial verfestigt, um das Verstärkungsmaterial an der inneren Oberfläche des Statorrohrs anzuhaften, woraufhin der Dorn aus dem Statorrohr und dem Verstärkungsmaterial, die aneinander haften, entnommen wird, so dass ein Stator hergestellt ist.The present invention generally relates to a method of manufacturing a stator for a downhole motor, the method comprising the steps of providing a stator tube having an inner surface, applying an adhesive to the inner surface of the stator tube, positioning a mandrel in the A stator tube, wherein the mandrel has an outer geometry that is complementary to a desired inner geometry for the stator, and the introduction of a reinforcing material into the stator tube to fill the space between the mandrel and the inner surface of the stator tube comprises. In addition, the reinforcing material is solidified to adhere the reinforcing material to the inner surface of the stator tube, after which the mandrel is taken out of the stator tube and the reinforcing material adhered to each other so that a stator is manufactured.
Gemäß einem Aspekt der vorliegenden Erfindung umfasst das Statorrohr ein Material, das aus der Gruppe gewählt ist, die besteht aus Eisen, Stahl, Hochgeschwindigkeitsstahl, Kohlenstoffstahl, Wolframstahl, Messing und Kupfer.According to one aspect of the present invention, the stator tube comprises a material selected from the group consisting of iron, steel, high-speed steel, carbon steel, tungsten steel, brass and copper.
Außerdem kann das bei der Herstellung des Stators verwendete Haftmittel ein einlagiges Haftmittel oder ein mehrlagiges Haftmittel sein.In addition, the adhesive used in the manufacture of the stator may be a single-layer adhesive or a multi-layer adhesive.
Gemäß einem Aspekt der vorliegenden Erfindung kann der Dorn ein Material enthalten, das aus der Gruppe gewählt ist, die besteht aus: Eisen, Stahl, Hochgeschwindigkeitsstahl, Kohlenstoffstahl, Wolframstahl, Messing und Kupfer. Außerdem kann der Dorn mit einem Trennmittel beschichtet sein, das zahlreiche Formen einschließlich fest, halbfest oder flüssig besitzen kann.According to one aspect of the present invention, the mandrel may include a material selected from the group consisting of: iron, steel, high-speed steel, carbon steel, tungsten steel, brass and copper. In addition, the mandrel may be coated with a release agent which may have numerous forms including solid, semi-solid or liquid.
Das Verstärkungsmaterial der vorliegenden Erfindung kann zahlreiche Formen annehmen, wie ein Fachmann auf dem Gebiet versteht. Beispielsweise kann das Verstärkungsmaterial ein Verbundwerkstoff sein. Gemäß einem weiteren Aspekt der vorliegenden Erfindung kann das Verstärkungsmaterial ein Polymer sein. Gemäß einem weiteren Aspekt der vorliegenden Erfindung kann das Verstärkungsmaterial ein wärmehärtender Kunststoff oder ein thermoplastisches Material sein.The reinforcing material of the present invention may take many forms, as understood by one skilled in the art. For example, the reinforcing material may be a composite material. According to another aspect of the present invention, the reinforcing material may be a polymer. According to another aspect of the present invention, the reinforcing material may be a thermosetting plastic or a thermoplastic material.
Wie ein Fachmann auf dem Gebiet versteht, kann das Verstärkungsmaterial eines Aspekts der vorliegenden Erfindung aus der Gruppe gewählt sein, die besteht aus: Epoxidharzen, Polyimiden, Polyketonen, Polyetheretherketonen (PEEK), Phenolharzen und Polyphenylensulfiden (PPS).As one skilled in the art understands, the reinforcing material of one aspect of the present invention may be selected from the group consisting of: epoxy resins, polyimides, polyketones, polyetheretherketones (PEEK), phenolic resins, and polyphenylene sulfides (PPS).
Weiterhin kann das Verstärkungsmaterial verschiedene Formen einschließlich einer Flüssigkeit, einer Paste, eines Schlamms, eines Pulvers und/oder einer Granulatform haben. Ferner kann das Verstärkungsmaterial vernetzt sein und/oder hochgradig kristallin sein. Gemäß Aspekten der vorliegenden Erfindung können bei der Verfestigung des Verstärkungsmaterials, um das Verstärkungsmaterial an der inneren Oberfläche des Statorrohrs anzuhaften, verschiedene Techniken verwendet werden. Diese Techniken können die Verwendung einer Wärmehärtung, einer Strahlungshärtung, einer Dampfhärtung und eines Kühlens umfassen, ohne jedoch darauf eingeschränkt zu sein.Further, the reinforcing material may have various shapes including a liquid, a paste, a slurry, a powder and / or a granular form. Further, the reinforcing material may be crosslinked and / or highly crystalline. In accordance with aspects of the present invention, various techniques may be used in consolidating the reinforcing material to adhere the reinforcing material to the inner surface of the stator tube. These techniques may include, but are not limited to, the use of heat curing, radiation curing, steam curing, and cooling.
Die vorliegende Erfindung beansprucht ferner einen Stator für einen Bohrlochmotor, wobei der Stator ein Statorrohr mit einer inneren Oberfläche und ein an der inneren Oberfläche haftendes verfestigtes Verstärkungsmaterial umfasst, wobei das verfestigte Verstärkungsmaterial eine innere Oberfläche besitzt, die einen inneren schraubenlinienförmigen Hohlraum definiert, der mehrere innere Keulen aufweist. Außerdem bezieht sich die vorliegende Erfindung auf einen Bohrlochmotor, der einen Stator umfasst, wobei der Stator ein Statorrohr mit einer inneren Oberfläche und ein an der inneren Oberfläche haftendes verfestigtes Verstärkungsmaterial aufweist, wobei das verfestigte Verstärkungsmaterial eine innere Oberfläche besitzt, die einen inneren schraubenlinienförmigen Hohlraum definiert, der mehrere innere Keulen aufweist, und einen Rotor, der im Stator aufgenommen ist, umfasst. Gemäß der vorliegenden Erfindung kann der Rotor mit einem Elastomer beschichtet sein, wobei das Elastomer eines oder mehrere Stoffe enthalten kann, die aus der Gruppe gewählt sind, die besteht aus: Kautschuk, Naturkautschuk (NR), synthetischem Polyisopren (IR), Butylkautschuk, halogenhaltigem Butylkautschuk, Polybutadien (BR), Nitrilkautschuk, Nitrilbutadienkautschuk (NBR), hydriertem Nitrilbutadienkautschuk (HNBR), carboxyliertem hydriertem Nitrilbutadienkautschuk (XHNBR), Chloroprenkautschuk (CR), Fluorkohlenstoffkautschuk (FKM) und Perfluorelastomere (FFKM).The present invention further claims a stator for a downhole motor, the stator comprising a stator tube having an inner surface and a solidified reinforcing material adhered to the inner surface, the consolidated reinforcing material having an inner surface defining an inner helical cavity having a plurality of inner surfaces Has clubs. In addition, the present invention relates to a downhole motor comprising a stator, the stator having a stator tube having an inner surface and a solidified reinforcing material adhered to the inner surface, the consolidated reinforcing material having an inner surface defining an inner helical cavity comprising a plurality of inner lobes and a rotor accommodated in the stator. According to the present invention, the rotor may be coated with an elastomer, which elastomer may contain one or more substances selected from the group consisting of: rubber, natural rubber (NR), synthetic polyisoprene (IR), butyl rubber, halogen-containing Butyl rubber, polybutadiene (BR), nitrile rubber, nitrile butadiene rubber (NBR), hydrogenated nitrile butadiene rubber (HNBR), carboxylated hydrogenated nitrile butadiene rubber (XHNBR), chloroprene rubber (CR), fluorocarbon rubber (FKM), and perfluoroelastomers (FFKM).
BESCHREIBUNG DER ZEICHNUNGENDESCRIPTION OF THE DRAWINGS
Für ein vollständigeres Verständnis des Wesens und der gewünschten Ziele der vorliegenden Erfindung wird auf die folgende genaue Beschreibung Bezug genommen, die in Verbindung mit den beigefügten Zeichnungsfiguren gegeben wird, in denen gleiche Bezugszeichen in allen der mehreren Ansichten entsprechende Teile bezeichnen und worin:For a more complete understanding of the spirit and desired objects of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawing figures in which like reference characters indicate corresponding parts throughout the several views, and wherein:
GENAUE BESCHREIBUNG DER ERFINDUNGDETAILED DESCRIPTION OF THE INVENTION
Ausführungsformen der Erfindung schaffen Statoren und Statoreinsätze für Bohrlochmotoren, Verfahren für deren Herstellung und Bohrlochmotoren, die sie verwenden. Verschiedene Ausführungsformen der Erfindung können in Bohrlokationssystemen verwendet werden.Embodiments of the invention provide stators and stator inserts for downhole motors, methods of making same, and downhole motors using them. Various embodiments of the invention may be used in well location systems.
BohrlokationssystemBohrlokationssystem
Ein Bohrstrang
In dem Beispiel dieser Ausführungsform umfasst das oberirdische System ferner ein Bohrfluid oder Bohrschlamm
Die Bohrsohlenanordnung
Das LWD-Modul
Das MWD-Modul
Eine besonders vorteilhafte Verwendung des Systems erfolgt in Verbindung mit einem gesteuerten Lenk- oder ”Richtungsbohren”. In dieser Ausführungsform ist ein lenkbares Rotary-Untersystem
Das Richtungsbohren ist beispielsweise beim Offshore-Bohren vorteilhaft, weil es die Möglichkeit des Bohrens vieler Bohrlöcher ausgehend von einer einzigen Plattform ermöglicht. Das Richtungsbohren ermöglicht außerdem ein horizontales Bohren durch eine Lagerstätte. Das horizontale Bohren ermöglicht, dass das Bohrloch über eine größere Strecke die Lagerstätte durchquert, wodurch die Produktion des Bohrlochs erhöht wird.Directional drilling, for example, is advantageous in offshore drilling because it allows drilling of many wells from a single platform. Directional drilling also allows for horizontal drilling through a deposit. Horizontal drilling allows the well to traverse the deposit over a longer distance, increasing production of the well.
Ein Richtungsbohrsystem kann auch in einem vertikalen Bohrvorgang verwendet werden. Oftmals weicht die Bohrkrone von einer geplanten Bohrbahn aufgrund der nicht vorhersagbaren Natur der Formationen, die durchdrungen werden, oder aufgrund der veränderlichen Kräfte, die die Bohrkrone erfährt, ab. Wenn eine solche Abweichung auftritt, kann ein Richtungsbohrsystem verwendet werden, um die Bohrkrone wieder auf ihren Kurs zu bringen.A directional drilling system can also be used in a vertical drilling operation. Oftentimes, the drill bit deviates from a planned drilling path due to the unpredictable nature of the formations being penetrated or due to the varying forces experienced by the drill bit. If such a deviation occurs, a directional drilling system can be used to bring the drill bit back on track.
Ein bekanntes Verfahren des Richtungsbohrens umfasst die Verwendung eines lenkbaren Rotary-Systems (”RSS”). In einem RSS wird der Bohrstrang von der Oberfläche aus gedreht, wobei Bohrlochvorrichtungen die Bohrkrone dazu veranlassen, in der gewünschten Richtung zu bohren. Das Drehen des Bohrstrangs reduziert das Auftreten eines Aufhängens des Bohrstrangs oder des Feststeckens während des Bohrens erheblich. Lenkbare Rotary-Bohrsysteme zum Bohren abgelenkter Bohrlöcher in die Erde können im Allgemeinen entweder als ”Kronenausricht”-Systeme oder als ”Kronenschiebe”-Systeme klassifiziert werden.One known method of directional drilling involves the use of a steerable rotary system ("RSS"). In an RSS, the drill string is rotated from the surface, with downhole devices causing the drill bit to drill in the desired direction. The rotation of the drill string significantly reduces the incidence of hanging the drill string or sticking during drilling. Steerable rotary drilling systems for drilling deflected boreholes into the ground can generally be classified as either "crown alignment" systems or "crown-slip" systems.
In dem Kronenausricht-System wird die Drehachse der Bohrkrone aus der lokalen Achse der Bohrsohlenanordnung in die allgemeine Richtung des neuen Lochs abgelenkt. Das Loch wird in Übereinstimmung mit der gewöhnlichen Dreipunktgeometrie, die durch obere und untere Stabilisierer-Berührungspunkte und die Bohrkrone definiert ist, vorangetrieben. Der Ablenkwinkel der Bohrkronenachse, die über eine endliche Strecke zwischen der Bohrkrone und dem unteren Stabilisierer gekoppelt ist, hat eine nicht kolineare Bedingung zur Folge, die für eine zu erzeugende Kurve erforderlich ist. Es gibt viele Weisen, auf die dies erzielt werden kann, einschließlich einer festen Biegung an einem Punkt in der Bohrsohlenanordnung in der Nähe des unteren Stabilisierers oder einer Durchbiegung der Bohrkronen-Antriebswelle, die zwischen dem oberen und dem unteren Stabilisierer verteilt ist. In der idealen Form muss die Bohrkrone nicht seitlich schneiden, weil die Bohrachse ununterbrochen in Richtung des gekrümmten Lochs gedreht wird. Beispiele von lenkbaren Rotary-Systemen des Kronenausrichttyps und deren Arbeitsweise sind beschrieben in den
In dem lenkbaren Rotary-System des Kronenschiebe-Typs gibt es gewöhnlich keinen speziell identifizierten Mechanismus, um die Kronenachse von der lokalen Bohrsohlenanordnungsachse abzulenken; stattdessen wird die erforderliche nicht kolineare Bedingung dadurch erzielt, dass der obere und/oder der untere Stabilisator dazu veranlasst werden, eine exzentrische Kraft oder eine exzentrische Verlagerung in einer Richtung auszuüben, die vorzugsweise in Bezug auf die Richtung des Lochvortriebs orientiert ist. Wiederum gibt es viele Weisen, auf die dies erzielt werden kann, einschließlich (in Bezug auf das Loch) drehfester exzentrischer Stabilisierer (verlagerungsbasierte Lösungswege) und exzentrischer Aktoren, die auf die Bohrkrone in der gewünschten Lenkrichtung eine Kraft ausüben. Wiederum wird das Lenken durch Erzeugen einer Nicht-Kolinearität zwischen der Bohrkrone und wenigstens zwei anderen Berührungspunkten erzeugt. In der idealisierten Form muss die Bohrkrone seitlich schneiden, um ein gekrümmtes Loch zu erzeugen. Beispiele für lenkbare Rotary-Systeme des Kronenschiebetyps und deren Arbeitsweise sind beschrieben in den
Bohrlochmotorendownhole motors
In den
Bohrlochmotoren
Die Drehung des Rotors
Bohrlochmotoren sind ferner in zahlreichen Veröffentlichungen beschrieben, etwa in den
Verfahren für die Herstellung von StatorenProcess for the production of stators
Nun wird in Verbindung mit den
Im Schritt S402 wird ein Statorrohr
Optional wird im Schritt S404 die innere Oberfläche des Statorrohrs
Im Schritt S406 wird auf die innere Oberfläche des Statorrohrs
Im Schritt
In einigen Ausführungsformen ist der Dorn
In einigen Ausführungsformen ist auf die elastische Schicht
Im Schritt S410 wird ein Verstärkungsmaterial
In Schritt S414 wird das Verstärkungsmaterial
Im Schritt S414 wird der Dorn
Verfahren für die Herstellung von StatoreinsätzenProcess for the production of stator inserts
In Verbindung mit den
Im Schritt S602 wird ein Dorn
Im Schritt S604 wird über dem Dorn
In einigen Ausführungsformen wird ein Schmiermittel oder ein Trennmittel (z. B. Flüssigkeiten, Gele und/oder Pulver) zwischen der flexiblen Hülse
Optional wird im Schritt S606 zwischen der flexiblen Hülse und den Dorn ein Vakuum angewendet, um die flexible Hülse
Im Schritt S608 werden die flexible Hülse
In einer weiteren Ausführungsform, die in
Im Schritt S610 wird in die Gießform ein Verstärkungsmaterial
Optional kann auf die innere Oberfläche der Gießform
Zusätzlich oder alternativ kann auf die flexible Hülse
Im Schritt S612 wird das Verstärkungsmaterial
Im Schritt S614 werden das verfestigte Verstärkungsmaterial
Im Schritt S616 wird optional der Dorn
Es können viele verschiedene Techniken verwendet werden, um das Statorrohr
In einigen Ausführungsformen ist der Statoreinsatz mit der inneren Oberfläche des Statorrohrs
Verstärkungsmaterialien und Verfahren zum VerfestigenReinforcing materials and methods of solidification
Die hier diskutierten Verstärkungsmaterialien
Die Verstärkungsmaterialien
Das Verfestigen der Verstärkungsmaterialien
Zusätzliche Verfahren für die Herstellung von StatorenAdditional processes for the production of stators
In Verbindung mit den
Im Schritt S902 wird ein Dorn
Optional kann der Dorn
Im Schritt S906 wird über dem Dorn
Optional wird im Schritt S908 ein Haftmittel (nicht dargestellt) auf die äußere Oberfläche der flexiblen Hülse
Im Schritt S910 wird ein Statorrohr
Optional wird im Schritt S912 die innere Oberfläche des Statorrohrs
Im Schritt S914 wird ein Haftmittel
Im Schritt S918 wird ein Verstärkungsmaterial
Im Schritt S920 wird das Verstärkungsmaterial
Optional wird im Schritt S922 der Dorn
AUFNAHME DURCH BEZUGNAHMERECORDING BY REFERENCE
Sämtliche Patente, Veröffentlichungen, Patentanmeldungen und andere Literaturstellen, die hier offenbart sind, sind hiermit ausdrücklich durch Bezugnahme vollständig mit aufgenommen.All patents, publications, patent applications, and other references disclosed herein are hereby expressly incorporated by reference in their entirety.
ÄQUIVALENTEEQUIVALENTS
Der Fachmann auf dem Gebiet erkennt unter dem Einsatz lediglich von Routineerfahrung viele Äquivalente der besonderen Ausführungsformen der Erfindung, die hier beschrieben worden sind, oder er ist in der Lage, diese zu ermitteln. Solche Äquivalente sollen von den folgenden Ansprüchen umfasst werden.Those skilled in the art, using only routine experience, will recognize many equivalents of the particular embodiments of the invention described herein or will be able to ascertain them. Such equivalents are intended to be encompassed by the following claims.
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
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Claims (19)
Applications Claiming Priority (3)
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US12/617,864 | 2009-11-13 | ||
US12/617,864 US8777598B2 (en) | 2009-11-13 | 2009-11-13 | Stators for downwhole motors, methods for fabricating the same, and downhole motors incorporating the same |
PCT/GB2010/001830 WO2011058294A2 (en) | 2009-11-13 | 2010-09-30 | Stators for downhole motors, methods for fabricating the same, and downhole motors incorporating the same |
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DE112010004390T5 true DE112010004390T5 (en) | 2012-08-23 |
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DE112010004390T Withdrawn DE112010004390T5 (en) | 2009-11-13 | 2010-09-30 | Borehole Motors Stators, Manufacturing Processes, and Wellbore Motors Containing Them |
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CA (1) | CA2780863C (en) |
DE (1) | DE112010004390T5 (en) |
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- 2010-09-30 RU RU2012124076A patent/RU2611125C2/en not_active IP Right Cessation
- 2010-09-30 GB GB1214247.7A patent/GB2496237B/en not_active Expired - Fee Related
- 2010-09-30 DE DE112010004390T patent/DE112010004390T5/en not_active Withdrawn
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Also Published As
Publication number | Publication date |
---|---|
US10233926B2 (en) | 2019-03-19 |
GB201214247D0 (en) | 2012-09-26 |
US8777598B2 (en) | 2014-07-15 |
WO2011058294A2 (en) | 2011-05-19 |
WO2011058294A3 (en) | 2011-08-11 |
RU2611125C2 (en) | 2017-02-21 |
GB2496237B (en) | 2014-01-29 |
CA2780863C (en) | 2018-11-06 |
US20110116959A1 (en) | 2011-05-19 |
CN102695844A (en) | 2012-09-26 |
CA2780863A1 (en) | 2011-05-19 |
US20150017047A1 (en) | 2015-01-15 |
GB2496237A (en) | 2013-05-08 |
RU2012124076A (en) | 2013-12-20 |
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